Rotary brush.



No. 7|3,080. v Patented mw, Il, i902.

F.G. FABNHAM.

RUTABY BRUSH.

(Application led Feb. 19, 1902.)

l(No Model.)

. brush.

rares ArjENT Fries.

ROTARY BRUSH.l

SPECIFICATION forming part of Letters Patent No. 713,080, dated November 11, 1902.

Application iiled February 19,1902, Serial No. 94,832. (No model.) l

To all whom t may concern:

Be it known that I, FRANK GUNN FARNHAM,

a citizen of the United States, residing at` Honesdale, Pennsylvania, have invented certain new and.useful'Improvement-s in Rotary Brushes, of which the following is a specification.

My invention relates to rotary brushes, and is designed as an vimprovement upon the forms of brush patented by me under date of April 30, 1901, No. 673,119, and July 2, 190i, No. 677,502. In the brush described in the latter patent I have shown clamping-disks having edges of peculiar form for compressing the brush material outside of the cemented portion in order to prevent the article operated upon being forced down farenough to cut off the brush material where it joins or is embedded in the cemented portion of' the brush, and in that form of brush I have found that the clamping-disks alone will not sufficiently compress the fibers on a wide It' the overturned edges of the flanges are extended inwardly -sufficient to compress the brush material throughout the whole Width of the brush, the result is a material narrowing of the working face, and it is to overcome this objection that I have devised the means which form the subject-matter of the present application.

The invention is illustrated in the accompanying drawings, in Which- Figure 1 is a sectional view of a brush-section. Fig. 2 isaside elevation of the saine,and Fig. 3 is a part section and part elevation of a complete brush. Fig. 4 is a detailview of a modification in which two spacing-ringsV for each section are used.

In Jthe drawings the letter a indicates the core, b the cloth disks secured on each side thereof, and c the cemented portions of the brush material confined between the circumferentialedges of the disks d, substantially in the manner described in my patents referred to. In the present construction I extend the'edges of the cloth disks out beyond the cemented portions, as indicated at b', and to this extended edge on one or both sides of the brush material I secure an annular` ring e, and each of these rings may be of any desired thickness,according to the requirements of the brush, and may be made of any suitable material, canvas being preferred. I have shown rings onf both sides in Fig. 4, while on one side alone in Fig. 8, either being used according to requirements.

When the plurality of the sections are assembled, as indicated in Figs. 3 and 4, it will be seen that these rings should come opposite each other and also directly opposite the compressing flanges or shoulders f of the clamping-disks. The result of this is that the brush material is compressed equally throughout the entire width'of .the brush and to a sufiicient degree to prevent any articlel terial and means for clamping said sections together, substantially as described.

2. A rotary brush comprising a plurality of sections, including brush material suitably secured, clamping-rings interposed between the brush material of said sections and clamping-disks for clamping said sections together, said clamping-disks having edges or shoulders located 'in line with the compressingrings, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

FRANK GUNN FARNHAM.

Witnesses: 1

Roer. A. SMITH, C. SALMON. 

